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Old 11-16-2003, 04:22 PM   #1
bubbyracing
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Unhappy '91 Sub heater core

Has anyone had the pleasure of changing a heater core in one of these beasts? Mine has air, just to add to the excitement.
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Old 11-17-2003, 01:25 PM   #2
KShortell
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I haven't done it myself, but you can find instructions with photos here: Colorado K5 Heater Core Replacement

Good luck!
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Last edited by KShortell; 11-17-2003 at 01:29 PM.
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Old 11-19-2003, 07:02 PM   #3
walleye1
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Yes, I've done it. It wasn't too bad. Use the previous link for info. go to your local chevy parts dealer and ask for a line drawing of the whole assembly. It took me about 4 hours total and I'm no mechanic. I think it took longer to remove all the heater/defroster junk than the actual core. Good luck. walleye1 ps... remember to drain down your antifreeze or you'll get real wet and sticky!

Last edited by walleye1; 11-19-2003 at 11:09 PM.
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